EP3285689B1 - Spring-powered, hydraulically-operate intraocular lens inserter - Google Patents

Spring-powered, hydraulically-operate intraocular lens inserter Download PDF

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Publication number
EP3285689B1
EP3285689B1 EP16783693.1A EP16783693A EP3285689B1 EP 3285689 B1 EP3285689 B1 EP 3285689B1 EP 16783693 A EP16783693 A EP 16783693A EP 3285689 B1 EP3285689 B1 EP 3285689B1
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EP
European Patent Office
Prior art keywords
intraocular lens
piston
iol
set forth
hydraulic
Prior art date
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Active
Application number
EP16783693.1A
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German (de)
English (en)
French (fr)
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EP3285689A4 (en
EP3285689A1 (en
Inventor
Avraham Zakay
Raz Ben YAAKOV
Jonathan D. COLLINS
Daniel M. SWANTNER
Gregory A. YARBROUGH
Charles P. JACKSON
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Atrion Corp
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Atrion Corp
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
    • A61F2/16—Intraocular lenses
    • A61F2/1662—Instruments for inserting intraocular lenses into the eye
    • A61F2/167—Instruments for inserting intraocular lenses into the eye with pushable plungers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A61F9/00736—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00535—Surgical instruments, devices or methods, e.g. tourniquets pneumatically or hydraulically operated
    • A61B2017/00539—Surgical instruments, devices or methods, e.g. tourniquets pneumatically or hydraulically operated hydraulically

Definitions

  • This invention relates to intraocular lens inserters for inserting an intraocular lens (IOL) through a small clear corneal incision of an eye into the capsular opening (capsulorhexis) and to its final position within the capsular bag.
  • IOL intraocular lens
  • Representative prior art IOL inserters include Published United States Patent Application 2014/0276901 and European Patent EP 0 937 443 B1 .
  • It is an object of this invention is to provide a one-handed, spring-powered IOL inserter that operates hydraulically by a finger-operated operation valve to smoothly deliver the IOL continuously at a constant speed into the patient's eye while minimizing irregular movement that might otherwise result in the IOL being inserted too erratically into the eye or overshooting the IOL into the eye.
  • Another object to this invention is to provide an IOL inserter that is adaptable to use commercially available IOL folding and delivery chambers manufactured by IOL manufacturers.
  • Another object of this invention is to provide a spring-powered, hydraulically-operated IOL inserter that dispenses an initial amount of ophthalmic viscoelastic fluid into the IOL folding and delivery chamber to wet the chamber and smoothly fold of the IOL into position for delivery.
  • Another object of this invention is to provide a spring-powered, hydraulically-operated IOL inserter composed of biocompatible materials that is sufficiently economical to manufacture to be capable of being a single-use (i.e., disposable) IOL inserter.
  • this invention comprises a spring-loaded piston that pushes an ophthalmic viscoelastic (OVD) fluid to achieve both restrained, constant IOL speed and lubrication, a single OVD filling port using about 0.5ml OVD (per industry standard), and a third-party pre-loaded IOL delivery system having a lens folding and delivery chamber.
  • the lens folding and delivery cartridge comprises the AcrySert C preloaded injector manufactured by Alcon, Inc. to insert Alcon's AcryS IQ IOL.
  • the lens folding and delivery cartridge comprises the Unfolder Platinum Series Cartridge manufactured by Abbott Medical Optics Inc.
  • the first embodiment of the IOL inserter of the invention comprises, a generally elongated outer shell including a spring chamber, an OVD filling port, a piston window, an operation button, a safety pin, and the AcrySert delivery system having a lens window and a tip for inserting into a 2.2 mm incision.
  • the interior of the IOL inserter of the first embodiment of the invention is shown in Fig. 2 and comprises a spring, piston, hydraulic mechanism housing, operation button and AcrySert delivery system.
  • the piston includes O-rings at both ends to prevent fluid leakage.
  • the properties of the spring may include those reflected in Fig. 3 .
  • the hydraulic mechanism comprises an OVD filling port check valve, allowing filling of an OVD chamber with OVD from a syringe filled with OVD, which flows from the OVD chamber through an opening into the valve cavity (see Section A).
  • OVD fluid flows through a conduit into the AcrySert lens chamber to fill the same.
  • Step 1 the OVD chamber is filled with OVD via the OVD filling port check valve.
  • the safety pin holds the valve open allowing the OVD fluid to flow via the conduit into the AcrySert delivery system.
  • the syringe containing the supply of OVD fluid delivers sufficient fluid to fill the OVD chamber and the AcrySert delivery system via the conduit up to the indicated fill line in the tip of the system.
  • the safety pin also locks the piston.
  • Step 2 of the injector operation includes removing the safety pin whereupon the valve is released and moves upward by means of its spring to its closed position to close the conduit. Removal of the safety pin also releases the piston.
  • Step 3 shown in Fig. 8 by depressing the operation button to partially open the valve, the IOL is advanced while folding it by means of the piston to its folded position. It is noted that the button includes stoppers to prevent the valve from moving all the way down. Continued depressing of the operation button then delivers the folded IOL into the eye.
  • the second embodiment of the IOL Inserter of the invention shown in Fig. 9 comprises a design similar to the first embodiment.
  • the second embodiment of the IOL Inserter is adapted to be used in conjunction with the IOL folding and delivery Cartridge known as the "Unfolder Platinum Series Cartridge" manufactured by Abbott Medical Optics Inc. to insert Abbott's Tecnis 1-Piece Aspheric IOL.
  • the second embodiment further improves upon the first embodiment to operate in following manner.
  • the surgical assistant loads the IOL into the IOL Cartridge wetted with OVD fluid.
  • the surgical assistant fills the Hydraulic Housing via a Fill Port with OVD fluid.
  • the IOL Cartridge is then inserted into the proximal end of a Slider of the IOL inserter.
  • the Slider is pushed inwardly into the proximal end of the Outer Shell Housing of the IOL Inserter and held into position by a catch. The inward movement of the Slider closes the Operation Switch.
  • the surgical assistant then snaps-off the Safety Clasp as shown in Fig. 11 , which allows the Release Pin to move slightly forward in a slot in the Outer Shell Housing.
  • the Release Pin is coupled to a spring-loaded Piston Housing (not shown) which moves forwardly to correspondingly move the Piston slightly forward. This slightly forward movement of the Piston forces the IOL into a folded condition in the IOL Cartridge, ready to be inserted into the patient's eye.
  • the surgical assistant then moves the Release Pin off to the side, which internally functions to release the Piston to be subjected to the full force of a high-pressure spring entrained within the Piston Housing against the head of the Piston.
  • the IOL inserter is now in its cocked position.
  • the IOL inserter includes an OVD fill port that is Luer compatible.
  • a spring-loaded charging plunger is operatively positioned in the rear of the outer shell housing.
  • a hydraulic tube (hypo tube) that encircles a portion of the piston fitted with O-rings to defines a hydraulic chamber.
  • the chamber is fluidly connected to a hydraulic housing containing a valve.
  • the hydraulic chamber is fluidly connected to the fill port so that when an OVD-filled syringe is fitted to the Luer fitting of the fill port and OVD is injected therein, the hydraulic chamber is filled with OVD fluid. Also, excess OVD fluid is allowed to flow through a molded-in OVD conduit through a valve of a spring-loaded operation button being held open by a button latching rod. OVD fluid flowing through the open valve and OVD conduit fills the IOL cartridge, such as an AMO Tecnis iTec Preloaded Delivery and System Folder and Delivery Chamber.
  • Step 1 comprises filling the hydraulic chamber with OVD fluid until OVD can be seen in front of the IOL to wet the IOL.
  • the valve is held open by means of the button latching rod (see Fig. 33 ) so that OVD may flow into the IOL cartridge to fill the same to the desired level.
  • Step 2 comprises pushing the charging plunger fully into the rear of the outer shell housing and locking it in place with an audible "click.”
  • the button latching rod likewise moves forward to release the button from being held in its open position.
  • the button and hence the valve moves upwardly to a closed position, thereby activating the hydraulic valving system.
  • the piston is advanced into in the IOL cartridge to push the IOL into the manufacturer's recommended 30 second to 10 minute location.
  • the spring of the charging piston is now constantly urging the piston forwardly; however, the piston remains stationary due to the OVD being captured within the hydraulic chamber. The piston may move forward under the force of the spring only when the captured OVD in the hydraulic chamber is bled therefrom by depressing the operation button to re-open the valve.
  • Step 3 involves the surgeon's finger depressing the operation button to re-open the valve whereupon the IOL is moved forwardly into the manufacturer's recommend 1 minute maximum lens folding position in the IOL cartridge.
  • continued depressing of the operation button then further advances the piston until the IOL is deployed into the patient's eye.
  • the third embodiment of the IOL inserter is intended to be co-developed with Abbott to be used with Abbott's IOL cartridge for its Tecnis 1-Piece Aspheric IOL (see also Fig. 9A ).
  • the IOL inserter may be adapted to be used with other IOL cartridges of other IOL manufacturers.
  • the first embodiment of the IOL inserter 10 of the invention comprises a hydraulic housing 12 positioned within an outer shell housing 14 and secured by screws 15.
  • the hydraulic housing 12 is operatively connected to an IOL cartridge 16 pre-loaded with an IOL 18 for delivery into a person's eye upon removal of a safety clasp 20 and depressing of an operation button 22.
  • a hydraulic piston 24 is positioned within a longitudinal bore 26 in the hydraulic housing 12.
  • the piston 24 includes a smaller-diameter portion 28 extending through the longitudinal bore 26 and a larger-diameter portion 30 extending into a longitudinal cylinder 32 formed in the outer shell housing 14. Being smaller in diameter than the lumen of the longitudinal bore 26, the smaller-diameter portion 28 defines an annular hydraulic chamber 31.
  • the distal end of the piston 24 includes a piston head 34 dimensioned to slide within the longitudinal cylinder 32.
  • a high pressure compression spring 36 is entrained between the piston head 34 and the rear wall 38 of the longitudinal cylinder 32 to constantly urge the piston 24 forwardly.
  • the safety clasp 20 comprises resilient arms 40 that removably grasp around the rear of the outer shell housing 14.
  • the safety clasp 20 includes an inwardly extending safety pin 42 that extends through a pin opening 44 in the outer shell housing 14 to block the forward movement of the piston head 34 until removed.
  • the hydraulic housing 12 includes a fill port 46 connected in fluid communication with the hydraulic chamber 31.
  • the fill port 46 includes an elastomeric stopper 48 capable of being pierced by a hypodermic needle of a syringe filled OVD fluid.
  • the hydraulic chamber 31 may be filled with OVD fluid by injection from the OVD-filled syringe. Once filled and the hypodermic needle is removed, the stopper 48 fully closes to prevent any leakage of OVD fluid from the chamber 31.
  • a first O-ring 50 is positioned about the larger-diameter portion 30 of the piston 24 close to the transition to the smaller-diameter portion 28.
  • the first O-ring 50 functions to seal against the lumen of the longitudinal bore 26 as the piston 24 moves forwardly, thereby forcing the OVD fluid within the hydraulic chamber 31 through the operation button 22 (described hereinafter). It is noted that the front (proximal) end of the longitudinal bore 26 steps down to a reduced diameter equal to that of the small-diameter portion 28 of the piston 24.
  • a second O-ring 52 is positioned at the step 54 to sealingly engage around the smaller-diameter portion 28 of the piston 24 to prevent OVD fluid in the hydraulic chamber 31 from leaking therethrough.
  • a first bleed channel 56 extends from the hydraulic chamber 31 to a vertically extending valve cylinder 58.
  • a second bleed channel 60 extends from the valve cylinder 58 to the IOL cartridge 16. The second bleed channel 60 is at a higher level than the first bleed channel 56.
  • a valve element 62 is positioned within the valve cylinder 58.
  • Upper and lower O-rings 62U and 62L are positioned on the valve element 60 and spaced apart along the length thereof such that when the O-rings 62 straddle the bleed channels 56 and 60, fluid flow is established between the hydraulic chamber 31 and the IOL cartridge 16 (see Fig. 15B-B ).
  • the valve element 62 is positioned such that the lower O-ring 62L is above the first bleed channel 56, fluid flow from the hydraulic chamber 31 and the IOL cartridge 16 is blocked.
  • the operation button 22 is connected to the valve element 62.
  • a spring 64 is entrained underneath the button 22 and a notch 66 in the hydraulic housing 12 to constantly urge the button upwardly.
  • the position of the button 22 is kept downwardly (i.e. open) by a catch so that the OVD fluid may flow from the hydraulic chamber 31 into the IOL cartridge 16 to fill the same.
  • the button 22 is released and allowed to move upwardly to block (i.e., close) the fluid flow from the first bleed channel 56 to the second bleed channel 60.
  • the ergonomic design of the IOL inserter 10 allows for one-handed operation by the surgeon. Depressing of the surgeon's finger on the button 22 against the resiliency of spring 64 moves the valve element 62 downwardly to the point where the O-rings 62U and 62L straddle the first bleed channel 56. OVD fluid is thus bled from the hydraulic chamber 31 and into the IOL cartridge. As the OVD fluid is bled from the chamber 31, the high pressure of the spring 36 forces the piston 24 forwardly in a smooth and deliberate speed. As the piston 24 moves forward, the tip 68 of the small-diameter portion 38 extends further into the IOL cartridge 16 to deliver the IOL 18 into the patient's eye. At any point during the forward travel of the piston 24, the surgeon may release the button 22 whereupon spring 64 returns the button 22 to its upward position and valve element 62 moves to its closed position (see Fig. 16H-H ).
  • the first embodiment of the IOL inserter 110 of the invention comprises a hydraulic housing 112 positioned within an outer shell housing 114 and secured by screws 115.
  • the hydraulic housing 112 is operatively connected to an IOL cartridge 116 pre-loaded with an IOL 118 for delivery into a person's eye upon removal of a safety clasp 120 and depressing of an operation button 122.
  • a hydraulic piston 124 is positioned within a longitudinal bore 126 in the hydraulic housing 112.
  • the piston 124 includes a smaller-diameter portion 128 extending through the longitudinal bore 126 and a larger-diameter portion 130 extending into a longitudinal cylinder 132 formed in a piston housing 170 positioned in the outer shell housing 114. Being smaller in diameter than the lumen of the longitudinal bore 126, the smaller-diameter portion 128 defines an annular hydraulic chamber 131.
  • the distal end of the piston 124 includes a piston head 134 dimensioned to slide within the longitudinal cylinder 132.
  • a high pressure compression spring 136 is entrained between the piston head 134 and the rear wall 138 of the longitudinal cylinder 132 to constantly urge the piston 124 forwardly.
  • the safety clasp 120 comprises resilient arms 140 that removably grasp into corresponding depressions 176 formed on opposing sides of the rear of the outer shell housing 114.
  • a separate inwardly extending safety pin 172 extends through a pin opening 174 in the center of the clasp 120 and through a J-shaped slot 180 formed in the outer shell housing 14 and is permanently connected to the piston housing 170 by threads 178. It is noted that only upon removal of the clasp 120 is the safety pin 172 allowed to move within the J-shaped slot 180. Because the safety pin 172 is permanently connected to the piston housing 170, movement of the piston housing 170 is defined by the configuration of the J-shaped slot 180 to first move longitudinally outwardly and then rotationally (compare Figs. 11 and 12 ).
  • the rearward (distal) end of the piston housing 170 comprises a boss 182 that extends into rear of the outer shell housing 114.
  • a compression spring 184 is positioned concentrically over the boss 182.
  • inwardly extending guide fingers 186 center the boss 182 and spring 184 within the rear of the outer shell housing 114.
  • spring 184 constantly urges the piston housing 170 forwardly.
  • the safety clasp 120 is removed, the safety pin 172 is freed and is allowed to move within J-slot 180.
  • Spring 184 therefore moves the piston housing 170 forwardly a short distance equal to the length of the long leg of the J-slot 180.
  • the piston housing 170 correspondingly rotates in the same direction by the same rotational degree.
  • the head 134 of the piston 124 comprises opposing parallel arms 192 extending longitudinally from the opposing sides of the head 134.
  • the arms 192 are dimensioned to longitudinally slide into the long legs 194L of corresponding J-slots 194 formed in opposing sides of the piston housing 170.
  • the length of the arms 192 are dimensioned relative to the short leg 194S of the J-slots 194 to fit therein when the piston housing 170 is rotated. As shown in Fig.
  • each of the arms 192 is greater that the depth of the J-slot 194 such that they protrude beyond the outer periphery of the piston housing 170 to ride in corresponding rails 196 extending inwardly from the inside of the outer shell housing 14, thereby preventing any rotational movement of the piston 24.
  • the head 134 of the piston 124 may include opposing radial tabs 134T that extend into another J-slot 134J in the piston housing 170 to provide addition support for keeping the spring 136 compressed until the piston housing 170 is rotated by the safety pin 172.
  • the hydraulic housing 112 includes a fill port 146 connected in fluid communication with the hydraulic chamber 131.
  • the fill port 146 includes an elastomeric stopper 148 capable of being pierced by a hypodermic needle of a syringe filled OVD fluid.
  • the hydraulic chamber 131 may be filled with OVD fluid by injection from the OVD-filled syringe. Once filled and the hypodermic needle is removed, the stopper 148 fully closes to prevent any leakage of OVD fluid from the chamber 131.
  • a first O-ring 150 is positioned about the larger-diameter portion 130 of the piston 124 close to the transition to the smaller-diameter portion 28.
  • the first O-ring 150 functions to seal against the lumen of the longitudinal bore 126 as the piston 124 moves forwardly, thereby forcing the OVD fluid within the hydraulic chamber 131 through the operation button 122 (described hereinafter). It is noted that the front (proximal) end of the longitudinal bore 126 steps down to a reduced diameter equal to that of the small-diameter portion 128 of the piston 124.
  • a second O-ring 152 is positioned at the step 154 to sealingly engage around the smaller-diameter portion 128 of the piston 124 to prevent OVD fluid in the hydraulic chamber 131 from leaking therethrough.
  • a first bleed channel 156 extends from the hydraulic chamber 131 to a vertically extending valve cylinder 158.
  • a second bleed channel 160 extends from the valve cylinder 158 to the IOL cartridge 116. The second bleed channel 160 is at a higher level than the first bleed channel 156.
  • a valve element 162 is positioned within the valve cylinder 158.
  • Upper and lower O-rings 162U and 162L are positioned on the valve element 60 and spaced apart along the length thereof such that when the O-rings 162 straddle the bleed channels 156 and 160, fluid flow is established between the hydraulic chamber 131 and the IOL cartridge 116 (see Fig. 18B-B ).
  • the valve element 162 is positioned such that the lower O-ring 162L is above the first bleed channel 156, fluid flow from the hydraulic chamber 131 and the IOL cartridge 116 is blocked.
  • the operation button 122 is connected to the valve element 162.
  • a spring 164 is entrained underneath the button 122 and a notch 166 in the hydraulic housing 112 to constantly urge the button 122 upwardly.
  • the second embodiment of the IOL injector 110 of the invention includes a slider 200 that interfaces the IOL cartridge 116 to the inserter 110.
  • the slider comprises a front receptacle 202 adapted to receive the desired IOL cartridge 116 such as the Abbott's Tecnis 1-Piece Aspheric IOL identified above.
  • Fig. 9A represents Abbott's instructions for use for its IOL cartridge.
  • the slider 200 comprises a pair of rearwardly-extending parallel arms 204 having outer rails 206 that engage into corresponding longitudinal slots 208 formed on the inside sides of the outer shell housing 114.
  • the arm 204 on the opposite side of the valve element 62 comprises an interrupted inside rail 210 that fits into a longitudinal slot in the leg 212 of the button 22 to catch (i.e., hold) it in its downward, open position ( Fig. 16 H-H ) allowing OVD fluid to flow into the IOL cartridge 16.
  • the slider 200 may be pushed fully inward and held into position by a resilient catch 214 formed in the bottom of the outer shell housing 14 ( Fig. 25 ). Once the slider 200 is snapped into position by catch 214, leg 212 moves over the interrupted part of the rail 210 and the leg 212 and hence the button 122 and valve element 162 move upwardly to its closed position.
  • the position of the button 122 is kept downwardly (i.e. open) so that the OVD fluid may flow from the hydraulic chamber 131 into the IOL cartridge 116 to fill the same ( Fig. 24 ).
  • the button 122 is allowed to move upwardly to block (i.e., close) the fluid flow from the first bleed channel 156 to the second bleed channel 160 ( Fig. 25 ).
  • the ergonomic design of the IOL inserter 10 allows for one-handed operation by the surgeon. Depressing of the surgeon's finger on the button 22 against the resiliency of spring 64 moves the valve element 62 downwardly to the point where the O-rings 62U and 62L straddle the first bleed channel 56. OVD fluid is thus bled from the hydraulic chamber 31 and into the IOL cartridge. As the OVD fluid is bled from the chamber 31, the high pressure of the spring 36 forces the piston 24 forwardly in a smooth and deliberate speed. As the piston 24 moves forward, the tip 68 of the small-diameter portion 38 extends further into the IOL cartridge 16 to deliver the IOL 18 into the patient's eye. At any point during the forward travel of the piston 24, the surgeon may release the button 22 whereupon spring 64 returns the button 22 to its upward position and valve element 62 moves to its closed position (see Fig. 16H-H ).
  • Figs. 24-28 respectfully correspond to Figs. 9-13 showing the start-to-finish use of the second embodiment of the IOL inserter 110.
  • the IOL cartridge 116 loaded with an OVD-wetted IOL 118, has been snapped into the receptacle 202 of the slider 200 and the slider 200 has been partially inserted into the outer shell housing 114.
  • the valve element 162 is held open by means of the interrupted rail 210.
  • the surgical assistant fills the hydraulic chamber 131 with OVD via the fill port 146 with sufficient excess fluid flowing into the IOL cartridge 116 per the manufacturer's instructions for use.
  • valve element 162 closes because of the interruption in the interrupted rail 210.
  • the safety pin 172 (and therefore piston housing 170 and piston 124) move forwardly the distance of the long portion of the J-slot 180 by means of spring 184.
  • This forward movement of the piston 124 advances the smaller-diameter portion 128 of the piston 124 further into the IOL cartridge 116 to advance and hence fold the IOL 118 further into the delivery portion of the cartridge 116.
  • the surgical assistant rotates the safety pin 172 whereupon the piston housing 170 also rotates to disengage the arms 192 of the piston 124 from the of the shorter legs 194S of the J-slots 194. This releases the full force of the high compression spring 136 against the head 134 of the piston 124; however, the piston 124 does not move forward because the valve element 162 is closed, trapping the OVD fluid in the hydraulic chamber 131.
  • the IOL inserter 110 is now ready and the surgical assistant hands it to the surgeon.
  • the third embodiment of the IOL inserter 310 comprises an outer shell housing 314 into which is loaded an IOL cartridge 316 having a clear window 316W for visualizing the IOL 318 and OVD fluid therein.
  • the IOL inserter 310 further includes a fill-port 346 for filling with OVD fluid.
  • the fill-port 346 is fluidly connected to a hydraulic tube 326 in which is positioned the smaller diameter portion 328 of a hydraulic piston 324. It is noted that leakage about the periphery of the hydraulic tube 326 is precluded by O ring 352 positioned about the forward most end of the tube 326 which seals within the valve housing 362H. The forward end of the hydraulic tube 326 extends into a valve housing 362H and sealed by second O-ring 352. The tip 368 of the piston 324 extends out of the hydraulic tube 326 within the valve housing 362H and extends into the IOL cartridge 316. Another O-ring 362H prevents leakage between the tip 368 and the housing 362H.
  • valve 362 is similar to the first and second embodiments 62 and 162 and comprises a valve element 362 having upper and lower O-rings 362U and 362L installed within a valve cylinder 358.
  • fill port 346 comprises a Luer fitting.
  • the fill port 346 comprises a generally circular bore 346B.
  • the rearward end 326R of the hydraulic tube 326 is sealingly inserted into the forward portion of the bore at 346B.
  • a first O-ring 350 is positioned in an O-ring slot formed at the juncture between the smaller diameter portion 328 and the larger diameter portion 330 of the piston 324 to form a seal with the rear portion of the bore 346B.
  • the operation button 322 is operatively connected to the leg 312 and is spring-loaded upwardly by a spring 364.
  • the operation button 322 and hence the valve 362 are held in their "down” or “open” position by means of a latching/unlatching mechanism 410 that fits into a side slot 412S in the leg 312 of the button 322.
  • the end of the unlatching mechanism 410 includes a cut out portion 428 that allows the valve 362 to move upwardly within the valve cylinder 358 of the valve housing 362H when the mechanism 410 is slid forwardly with the cut out portion 428 in alignment with the slot 412S.
  • Figs. 40-46 illustrating Step 1 of the intended use, so long as the valve element 362 is latched open by the mechanism 410, its lower O ring 362L is positioned in a frustro-conical portion 430FC of a bleed channel 430 where the lower O ring 362L is no longer being sealed inside the circular-cylindrical valve cylinder 358, thereby allowing OVD fluid to bleed around the O ring 362L and into the lower circular-cylindrical portion 430CC of the channel 430.
  • Channel 430 is fluidly connected to a horizontal channel 432.
  • the forward most end of the channel 432 comprises a nipple 434 that is sealingly mated with a corresponding port formed in the IOL cartridge 316.
  • Fig. 45 illustrates the first bleed channel 356 inside the valve housing 362H that fluidly connects the end of the hydraulic tube 326 to the valve cylinder 358
  • Fig. 46 better illustrates the IOL cartridge 316 and its visualization window 316W which allows the visualization of the IOL 318 and the OVD fluid filling the cartridge 316 to the desired, manufacturers' suggested level.
  • Step two involves charging the IOL inserter 310.
  • Step 2 After filling with OVD fluid in Step 1 ( Figs. 40-46 ), in Step 2 ( Figs. 47-49 ) involve charging the inserter 310 by means of the charging plunger 420 which is forcibly pushed into the rear of the outer shell housing 314 as shown by arrow 440 ( Fig. 47 ) up to a depth indicated by a charge indication line 442.
  • the charging plunger 420 comprises mating left and right portions 420L and 420R, each having forwardly extending flat thin legs 444 that reciprocate in grooves 446 formed in the left and right sides of the outer shell housing 314.
  • the outside surface of the legs 444 include a catch 448 that snap over corresponding protrusions 450 formed on the inner wall of the outer shell housing 314.
  • the catches/protrusions 448/450 allow the legs 444 to be snapped into position shown in Fig. 39 , allowing forward movement but precluding any backward rearward movement.
  • the high pressure spraying 336 is positioned over the end of a boss 382 extending rearwardly from the head 334 of the piston 324. In this position shown in Fig. 39 , a pair of inwardly extending pawls 452 engage under the head 334 of the piston 324 to keep the spring 336 compressed within the charging plunger 420. However, once the charging plunger 420 is forcibly pushed (see Fig. 47 ) fully into the rear of the inserter 310 ( Fig. 48 ), the pawls 452 are spread apart by tabs 454 inwardly extending from the outer shell housing 314. The pawls 452 engage and spread the pawls 452 outwardly apart as shown in Fig.
  • pawls 452 are allowed to expand outwardly by tabs 454 by virtue of the space between the legs 444 and the inner lumen of the outer shell housing 314.
  • additional protrusions 456 are aligned with the fully-inward position of the charging plunger 420 to allow catches 448 to snap over and be retained thereby to securely hold the charging plunger 420 in its charging position shown in Fig. 48 .
  • the indicator line 442 is no longer visible because it is moved inside the rear of the housing 314, thereby visually indicating that the plunger 420 has been pushed the desired distance into the rear of the housing 314.
  • one of the legs 444 engages and slides forward the unlatching mechanism 410 which moves its cut out portion 428 in alignment with the slot 412S in the leg 412 of the button 320, thereby allowing the button 320 to pop up to its closed position. It is noted that in the closed position, the lower O-ring 362L has moved upwardly from the frustro-conical portion 430FC into the circular cylindrical valve cylinder 358 to seal therewith, thereby precluding any OVD fluid flow therethrough.
  • the piston 324 is likewise forced forwardly.
  • the first O ring 350 moves into the hydraulic tube 326 to form a seal with its inner lumen entrapping OVD fluid therein while at the same time precluding any leakage back through the fill port 346.
  • Step 3 comprises deploying the IOL 318 into the patient's eye. Deployment occurs by depressing upon the button 322 to open the valve 362 (see Fig. 43 ) allowing OVD fluid to flow from hydraulic chamber 331 inside the hydraulic tube 326 into the valve housing 362H through the first bleed channel 356 into the valve cylinder 358, around the periphery of the valve element 362 and lower O-ring 362L and the valve cylinder 358, then over the surface of the lower O ring 362L and into the channel 432.
  • the piston 324 As the OVD fluid is bled from the hydraulic chamber 331 by depressing button 322, the piston 324 is allowed to move forward under pressure from spring 336. Such forward movement of the piston 324 causes the tip 368 of the piston to fully deliver the IOL 318 into the patient's eye. It is noted that the OVD fluid being bled from the hydraulic chamber 331 flows into the IOL cartridge 316.
  • the IOL inserter 310 of the invention may be adapted to be used with a variety of IOL cartridges 316 (AMO is merely illustrative).
  • the manufacturer's IOL cartridge 316 will have to be adapted to fit into the forward end of the outer shell housing 314 such as including locating and retention features (i.e., notches).
  • the tip 368 of the piston 324 would be optimally designed according to the manufacturer's specifications to properly engage that manufacturer's IOL 318 for proper folding of the IOL 318 in the IOL cartridge 316 and delivery into the patient's eye.

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Cardiology (AREA)
  • Transplantation (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Surgery (AREA)
  • Prostheses (AREA)
EP16783693.1A 2015-04-19 2016-04-19 Spring-powered, hydraulically-operate intraocular lens inserter Active EP3285689B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201562149650P 2015-04-19 2015-04-19
US201562219700P 2015-09-17 2015-09-17
PCT/US2016/028299 WO2016172113A1 (en) 2015-04-19 2016-04-19 Spring-powered, hydraulically-operate intraocular lens inserter

Publications (3)

Publication Number Publication Date
EP3285689A1 EP3285689A1 (en) 2018-02-28
EP3285689A4 EP3285689A4 (en) 2019-01-23
EP3285689B1 true EP3285689B1 (en) 2020-08-19

Family

ID=57144565

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16783693.1A Active EP3285689B1 (en) 2015-04-19 2016-04-19 Spring-powered, hydraulically-operate intraocular lens inserter

Country Status (8)

Country Link
US (1) US10610350B2 (zh)
EP (1) EP3285689B1 (zh)
JP (1) JP6590947B2 (zh)
KR (1) KR102579884B1 (zh)
CN (1) CN108024853B (zh)
ES (1) ES2819150T3 (zh)
IL (1) IL255117B (zh)
WO (1) WO2016172113A1 (zh)

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Also Published As

Publication number Publication date
ES2819150T3 (es) 2021-04-15
CN108024853A (zh) 2018-05-11
EP3285689A4 (en) 2019-01-23
IL255117B (en) 2021-06-30
KR20180011101A (ko) 2018-01-31
US10610350B2 (en) 2020-04-07
US20180333253A1 (en) 2018-11-22
WO2016172113A1 (en) 2016-10-27
CN108024853B (zh) 2020-05-12
IL255117A0 (en) 2017-12-31
JP2018516638A (ja) 2018-06-28
KR102579884B1 (ko) 2023-09-18
JP6590947B2 (ja) 2019-10-16
EP3285689A1 (en) 2018-02-28

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